关键词: 根冠比, 根冠比

Abstract:

The manmade plants community, Magnolia multiflora, was chosen as ecological restoration methods for the slope engineering of the expressway from Changde to Jishou in Hunan Province. In order to understand the characteristics of plants community, the community composition, structure, folra and important value of manmade plants community were analyzed. The results were showed that: (1) there were 17 species, belonged to 9 families, 17 generas; (2) The number of cosmopolitan families was higher than tropical families at the families level, while at the genus level, the temperate genus displayed dominate position; (3) The vertical structure of community was divided in tree layer, shrub layer and herb layer. The tree layer had single species, in shrub layer, Magnolia multiflora was the dominant species, there were a wealth of species in herb layer; (4) Important value of Magnolia multiflora was the largest in shrub layer, but the important value was very small in herb layer, which could not extrude the dominant species, but they could enrich species diversity. The result indicated that Magnolia multiflora could adapt to the slope environment with dominate position.Key words: ecological restoration; Magnolia multiflora; characteristics of plants community; Changde-Jishou expressway